Yamaha 2009 YFM25RY Service Manual page 225

TIP
Install the crankshaft assembly with the crank-
shaft installer pot "2", crankshaft installer bolt
"3", adapter "4" and spacer "5".
Crankshaft installer pot
90890-01274
Installing pot
YU-90058
Crankshaft installer bolt
90890-01275
Bolt
YU-90060
Adapter (M10)
90890-01383
Adapter #2
YU-90062
Spacer
90890-01288
ECA13970
To avoid scratching the crankshaft and to
ease the installation procedure, lubricate
the oil seal lips with lithium-soap-based
grease and each bearing with engine oil.
TIP
Hold the connecting rod at top dead center
(TDC) with one hand while turning the nut of
the crankshaft installer bolt with the other. Turn
the crankshaft installer bolt until the crankshaft
assembly bottoms against the bearing.
CRANKSHAFT ASSEMBLY
5-60